Polymer and organic light emitting device including polymer

Abstract

A polymer and an organic light-emitting device including the polymer are provided, wherein the polymer comprises a polymeric unit represented by the Formula: In which variables are as defined herein.

What is claimed is: 
     
       1. A polymer comprising a polymeric unit represented by Formula 1 below: 
       
         
           
           
               
               
           
         
         wherein each Ar is independently selected from a substituted or unsubstituted C 6 -C 30  arylene group and a substituted or unsubstituted C 3 -C 30  heteroarylene group; 
         a is an integer ranging from 1 to about 3; 
         each of R 1  to R 14  and R 21  to R 27  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, a substituted or unsubstituted C 3 -C 30  heteroaryl group, a group represented by —N(Q 1 )(Q 2 ), and a group represented by —Si(Q 3 )(Q 4 )(Q 5 ), wherein each of Q 1  to Q 5  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, and a substituted or unsubstituted C 3 -C 30  heteroaryl group; 
         n is an integer ranging from 1 to about 5; and 
         each “*” indicates a point of attachment to the same or a different polymeric unit represented by Formula 1. 
       
     
     
       2. The polymer of  claim 1 , wherein Ar is selected from a substituted or unsubstituted phenylene group, a substituted or unsubstituted pentalenylene group, a substituted or unsubstituted indenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted azulenylene group, a substituted or unsubstituted heptalenylene group, a substituted or unsubstituted indacenylene group, a substituted or unsubstituted acenaphthylene group, a substituted or unsubstituted fluorenylene group, a substituted or unsubstituted phenalenylene group, a substituted or unsubstituted phenanthrenylene group, a substituted or unsubstituted anthracenylene group, a substituted or unsubstituted fluoranthenylene group, a substituted or unsubstituted triphenylenylene group, a substituted or unsubstituted pyrenylenylene group, a substituted or unsubstituted chrysenylene group, a substituted or unsubstituted naphthacenylene group, a substituted or unsubstituted picenylene group, a substituted or unsubstituted perylenylene group, a substituted or unsubstituted pentaphenylene group, a substituted or unsubstituted hexacenylene group, a substituted or unsubstituted pyrrolylene group, a substituted or unsubstituted pyrazolylene group, a substituted or unsubstituted imidazolylene group, a substituted or unsubstituted imidazolinylene group, a substituted or unsubstituted imidazopyridinylene group, a substituted or unsubstituted imidazopyrimidinylene group, a substituted or unsubstituted pyridinylene group, a substituted or unsubstituted pyrazinylene group, a substituted or unsubstituted pyrimidinylene group, a substituted or unsubstituted indolylene group, a substituted or unsubstituted purinylene group, a substituted or unsubstituted quinolinylene group, a substituted or unsubstituted phthalazinylene group, a substituted or unsubstituted indolizinylene group, a substituted or unsubstituted naphthyridinylene group, a substituted or unsubstituted quinazolinylene group, a substituted or unsubstituted cinnolinylene group, a substituted or unsubstituted indazolylene group, a substituted or unsubstituted carbazolylene group, a substituted or unsubstituted phenazinylene group, a substituted or unsubstituted phenanthridinylene group, a substituted or unsubstituted pyranylene group, a substituted or unsubstituted chromenylene group, a substituted or unsubstituted benzofuranylene group, a substituted or unsubstituted thiophenylene group, a substituted or unsubstituted benzothiophenylene group, a substituted or unsubstituted isothiazolylene group, a substituted or unsubstituted benzoimidazolylene group, and a substituted or unsubstituted isoxazolylene group. 
     
     
       3. The polymer of  claim 1 , wherein Ar is selected from a phenylene group, a C 1 -C 10  alkylphenylene group, a di(C 1 -C 10  alkyl)phenylene group, a (C 6 -C 14  aryl)phenylene group, a di(C 6 -C 14  aryl)phenylene group, a carbazolylene group, a C 1 -C 10  alkylcarbazolylene group, a di(C 1 -C 10  alkyl)carbazolylene group, a C 6 -C 14  arylcarbazolylene group, a di(C 6 -C 14  aryl)carbazolylene group, a fluorenylene group, a C 1 -C 10  alkylfluorenylene group, a di(C 1 -C 10  alkyl)fluorenylene group, a (C 6 -C 14  aryl)fluorenylene group, a di(C 6 -C 14  aryl)fluorenylene group, a naphthylene group, a C 1 -C 10  alkylnaphthylene group, a di(C 1 -C 10  alkyl)naphthylene group, a (C 6 -C 14  aryl)naphthylene group, a di(C 6 -C 14  aryl)naphthylene group, an anthrylene group, a C 1 -C 10  alkylanthrylene group, a di(C 1 -C 10  alkyl)anthrylene group, a (C 6 -C 14  aryl)anthrylene group, a di(C 6 -C 14  aryl)anthrylene group, a phenanthrenylene group, a C 1 -C 10  alkylphenanthrenylene group, a di(C 1 -C 10  alkyl)phenanthrenylene group, a (C 6 -C 14  aryl)phenanthrenylene group, a di(C 6 -C 14  aryl)phenanthrenylene group, a pyridinylene group, a C 1 -C 10  alkylpyridinylene group, a di(C 1 -C 10  alkyl)pyridinylene group, a (C 6 -C 14  aryl)pyridinylene group, a di(C 6 -C 14  aryl)pyridinylene group, a quinolinylene group, a C 1 -C 10  alkylquinolinylene group, a di(C 1 -C 10  alkyl)quinolinylene group, a (C 6 -C 14  aryl)quinolinylene group, a di(C 6 -C 14  aryl)quinolinylene group, a benzoimidazolylene group, a C 1 -C 10  alkylbenzoimidazolylene group, a di(C 1 -C 10  alkyl)benzoimidazolylene group, a (C 6 -C 14  aryl)benzoimidazolylene group, a di(C 6 -C 14  aryl)benzoimidazolylene group, an imidazopyridinylene group, a C 1 -C 10  alkylimidazopyridinylene group, a di(C 1 -C 10  alkyl)imidazopyridinylene group, a (C 6 -C 14  aryl)imidazopyridinylene group, a di(C 6 -C 14 aryl)imidazopyridinylene group, an imidazopyrimidinylene group, a C 1 -C 10  alkylimidazopyrimidinylene group, a di(C 1 -C 10  alkyl) imidazopyrimidinylene group, a (C 6 -C 14  aryl)imidazopyrimidinylene group, and a di(C 6 -C 14  aryl)imidazopyrimidinylene group. 
     
     
       4. The polymer of  claim 1 , wherein a is 1, 2, or 3. 
     
     
       5. The polymer of  claim 1 , wherein, in Formula 1, —(Ar) a — is represented by one of Formulae 2A to 2K below: 
       
         
           
           
               
               
           
         
         wherein each of Z 1  to Z 4  is independently selected from a hydrogen atom, a C 1 -C 10  alkyl group, and a C 6 -C 14  aryl group; p, q, r and s are each independently an integer ranging from 1 to about 8; * indicates a binding site to N of an adjacent carbazole ring in Formula 1; and *′ indicates a binding site to N of another adjacent carbazole ring in Formula 1. 
       
     
     
       6. The polymer of  claim 1 , wherein each of R 1  to R 14  and R 21  to R 27  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 10  alkyl group, a substituted or unsubstituted C 2 -C 10  alkenyl group, a substituted or unsubstituted C 2 -C 10  alkynyl group, a substituted or unsubstituted C 1 -C 10  alkoxy group, a substituted or unsubstituted C 6 -C 14  aryl group and a substituted or unsubstituted C 3 -C 14  heteroaryl group. 
     
     
       7. The polymer of  claim 1 , wherein each of R 1  to R 2 , R 4  to R 11 , R 13  to R 14 , and R 22  to R 27  is a hydrogen atom; and each of R 3 , R 12 , and R 21  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, a substituted or unsubstituted C 3 -C 30  heteroaryl group, a group represented by —N(Q 1 )(Q 2 ), and a group represented by —Si(Q 3 )(Q 4 )(Q 5 ), wherein each of Q 1  to Q 5  is independently selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, and a substituted or unsubstituted C 3 -C 30  heteroaryl group. 
     
     
       8. The polymer of  claim 1 , wherein each of R 1  to R 14  and R 22  to R 27  is a hydrogen atom; and R 21  is selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a C 1 -C 10  alkyl group, a C 1 -C 10  alkoxy group, a C 6 -C 14  aryl group, and a C 3 -C 14  heteroaryl group. 
     
     
       9. The polymer of  claim 1 , wherein n is 1 or 2. 
     
     
       10. The polymer of  claim 1 , wherein the polymeric unit is represented by one of Formulae 1B and 1C below: 
       
         
           
           
               
               
           
         
         wherein each Ar is independently selected from a substituted or unsubstituted C 6 -C 30  arylene group and a substituted or unsubstituted C 3 -C 30  heteroarylene group; 
         a is 1, 2, or 3; 
         each of R 3 , R 12 , and R 21  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, a substituted or unsubstituted C 3 -C 30  heteroaryl group, a group represented by —N(Q 1 )(Q 2 ), and a group represented by —Si(Q 3 )(Q 4 )(Q 5 ), wherein each of Q 1  to Q 5  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, and a substituted or unsubstituted C 3 -C 30  heteroaryl group. 
       
     
     
       11. The polymer of  claim 10 , wherein, in Formulae 1B and 1C, —(Ar) a — is represented by one of Formulae 2A to 2K below: 
       
         
           
           
               
               
           
         
         wherein each of Z 1  to Z 4  is independently selected from a hydrogen atom, a C 1 -C 10  alkyl group, and a C 6 -C 14  aryl group; each of p, q, r and s is independently an integer ranging from 1 to about 8; * indicates a binding site to N of an adjacent carbazole ring in Formula 1; and *′ indicates a binding site to N of another adjacent carbazole ring in Formula 1. 
       
     
     
       12. The polymer of  claim 10 , wherein, in Formulae 1B and 1C, each of R 3 , R 12 , and R 21  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a C 1 -C 10  alkyl group, a C 1 -C 10  alkoxy group, a C 6 -C 14  aryl group, and a C 3 -C 14  heteroaryl group. 
     
     
       13. The polymer of  claim 10 , wherein, in Formulae 1B and 1C, each of R 3 , R 12 , and R 21  is independently selected from a hydrogen atom, a methyl group, an ethyl group, a linear or branched propyl group, a linear or branched butyl group, a linear or branched pentyl group, a linear or branched hexyl group, a linear or branched heptyl group and a linear or branched octyl group. 
     
     
       14. The polymer of  claim 1 , having a weight average molecular weight ranging from about 2,000 to about 1,000,000. 
     
     
       15. The polymer of  claim 1 , having bipolar characteristics. 
     
     
       16. An organic light-emitting device comprising a substrate; a first electrode; a second electrode; and a first layer disposed between the first electrode and the second electrode, the first layer comprising the polymer of  claim 1 . 
     
     
       17. The organic light emitting device of  claim 16 , wherein the first layer is an emission layer, and further comprises a phosphorescent dopant. 
     
     
       18. The organic light emitting device of  claim 17 , wherein the phosphorescent dopant comprises an organometallic complex including at least one metal selected from iridium (Ir), platinum (Pt), osmium (Os), rhenium (Re), titanium (Ti), zirconium (Zr), hafnium (Hf), and a combination thereof. 
     
     
       19. The organic light emitting device of  claim 17 , wherein the amount of the phosphorescent dopant is in the range of about 1 wt % to about 10 wt %. 
     
     
       20. The organic light emitting device of  claim 16 , further comprising, between the first electrode and the second electrode, at least one layer selected from a hole injection layer, a hole transport layer, an emission layer, a hole blocking layer, an electron transport layer, and an electron injection layer. 
     
     
       21. A polymer comprising a polymeric unit represented by Formula 1 below: 
       
         
           
           
               
               
           
         
         wherein each Ar is independently selected from a substituted or unsubstituted pentalenylene group, a substituted or unsubstituted indenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted azulenylene group, a substituted or unsubstituted heptalenylene group, a substituted or unsubstituted indacenylene group, a substituted or unsubstituted acenaphthylene group, a substituted or unsubstituted fluorenylene group, a substituted or unsubstituted phenalenylene group, a substituted or unsubstituted phenanthrenylene group, a substituted or unsubstituted anthracenylene group, a substituted or unsubstituted fluoranthenylene group, a substituted or unsubstituted triphenylenylene group, a substituted or unsubstituted pyrenylenylene group, a substituted or unsubstituted chrysenylene group, a substituted or unsubstituted naphthacenylene group, a substituted or unsubstituted picenylene group, a substituted or unsubstituted perylenylene group, a substituted or unsubstituted pentaphenylene group, a substituted or unsubstituted hexacenylene group, a substituted or unsubstituted pyrrolylene group, a substituted or unsubstituted pyrazolylene group, a substituted or unsubstituted imidazolylene group, a substituted or unsubstituted imidazolinylene group, a substituted or unsubstituted imidazopyridinylene group, a substituted or unsubstituted imidazopyrimidinylene group, a substituted or unsubstituted pyridinylene group, a substituted or unsubstituted pyrazinylene group, a substituted or unsubstituted pyrimidinylene group, a substituted or unsubstituted indolylene group, a substituted or unsubstituted purinylene group, a substituted or unsubstituted quinolinylene group, a substituted or unsubstituted phthalazinylene group, a substituted or unsubstituted indolizinylene group, a substituted or unsubstituted napththyridinylene group, a substituted or unsubstituted quinazolinylene group, a substituted or unsubstituted cinnolinylene group, a substituted or unsubstituted indazolylene group, a substituted or unsubstituted carbzolylene group, a substituted or unsubstituted phenazinylene group, a substituted or unsubstituted phenanthridinylene group, a substituted or unsubstituted pyranylene group, a substituted or unsubstituted chromenylene group, a substituted or unsubstituted pyranylene group, a substituted or unsubstituted chromenylene group, a substituted or unsubstituted benzofuranylene group, a substituted or unsubstituted benzothiophenylene group, a substituted or unsubstituted isothiazolylene group, a substituted or unsubstituted benzoimidazolylene group, and a substituted or unsubstituted isoxazolylene group; 
         a is an integer ranging from 1 to about 3; 
         each of R 1 , R 2 , R 4  to R 11 , R 13  and R 14  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, a substituted or unsubstituted C 3 -C 30  heteroaryl group, a group represented by —N(Q 1 )(Q 2 ), and a group represented by —Si(Q 3 )(Q 4 )(Q 5 ), wherein each of Q 1  to Q 5  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, and a substituted or unsubstituted C 3 -C 30  heteroaryl group; 
         each of R 3  and R 12  is independently selected from a hydrogen atom, a chlorine atom, a bromine atom, an iodine atom, a hydroxyl group, an amino group, a carboxylic acid group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 3 -C 30  heteroaryl group, a group represented by —N(Q 1 )(Q 2 ), and a group represented by —Si(Q 3 )(Q 4 )(Q 5 ), wherein each of Q 1  to Q 5  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, and a substituted or unsubstituted C 3 -C 30  heteroaryl group; 
         n is 0; and 
         each “*” indicates a point of attachment to the same or a different polymeric unit represented by Formula 1. 
       
     
     
       22. The polymer of  claim 21 , wherein Ar is selected from a carbazolylene group, a C 1 -C 10  alkylcarbazolylene group, a di(C 1 -C 10  alkyl)carbazolylene group, a C 6 -C 14  arylcarbazolylene group, a di(C 6 -C 14  aryl)carbazolylene group, a fluorenylene group, a C 1 -C 10  arylfluorenylene group, a di(C 1 -C 10  alkyl)fluorenylene group, a (C 6 -C 14  aryl)fluorenylene group, a di(C 6 -C 14  aryl)fluorenylene group, a naphthylene group, a C 1 -C 10  alkylnaphthylene group, a di(C 1 -C 10  alkyl)naphthylene group, a (C 6 -C 14  aryl)naphthylene group, a di(C 6 -C 14  aryl)naphthylene group, an anthrylene group, a C 1 -C 10  alkylanthrylene group, a di(C 1 -C 10  alkyl)anthrylene group, a (C 6 -C 14  aryl)anthrylene group, a di(C 6 -C 14  aryl)anthrylene group, a phenanthrenylene group, a C 1 -C 10  alkylphenanthrenylene group, a di(C 1 -C 10  alkyl)phenanthrenylene group, a (C 6 -C 14  aryl)phenanthrenylene group, a di(C 6 -C 14  aryl)phenanthrenylene group, a pyrindinylene group, a C 1 -C 10  alklpyrindinylene group, a di(C 1 -C 10  alkyl)pyridinylene group, a (C 6 -C 14  aryl)pyridinylene group, a di(C 6 -C 14  aryl)pyridinylene group, a quinolinylene group, a C 1 -C 10  alkylquinolinylene group, a di(C 1 -C 10  alkyl)quinolinylene group, a (C 6 -C 14  aryl)quinolinylene group, a di(C 6 -C 14 aryl)quinolinylene group, a benzoimidazolylene group, a C 1 -C 10  alkylbenzoimidazolylene group, a di(C 1 -C 10  alkyl)benzoimidazolylene group, a (C 6 -C 14  aryl)benzoimidazolylene group, a di(C 6 -C 14  aryl(benzoimidazolylene group, an imidazopyridinylene group, a C 1 -C 10  alkylimidazopyridinylene group, a di(C 1 -C 10  alkyl)imidazopyridinylene group a (C 6 -C 14  aryl)imidazopyridinylene group, a di(C 6 -C 14 aryl)imidazopyridinylene group, an imidazopyrimidinylene group, a C 1 -C 10  alkylimidazopyrimidinylene group, a di(C 1 -C 10  alkyl) imidazopyrimidinylene group, a (C 6 -C 14  aryl)imidazopyrimidinylene group, and a di(C 6 -C 14  aryl)imidaopyrimidinylene group. 
     
     
       23. The polymer of  claim 21 , wherein a is 1, 2, or 3. 
     
     
       24. The polymer of  claim 21 , wherein, in Formula 1, —(Ar) a — is represented by one of Formulae 2D to 2K below: 
       
         
           
           
               
               
           
         
         wherein each of Z 1  to Z 4  is independently selected from a hydrogen atom, a C 1 -C 10  alkyl group, and a C 6 -C 14  aryl group; p, q, r and s are each independently an integer ranging from 1 to about 8; * indicates a binding site to N of an adjacent carbazole ring in Formula 1; and *′ indicates a binding site to N of another adjacent carbazole ring in Formula 1. 
       
     
     
       25. The polymer of  claim 21 , wherein each of R 1 , R 2 , R 4  to R 11 , R 13  and R 14  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 10  alkyl group, a substituted or unsubstituted C 2 -C 10  alkenyl group, a substituted or unsubstituted C 2 -C 10  alkynyl group, a substituted or unsubstituted C 1 -C 10  alkoxy group, a substituted or unsubstituted C 6 -C 14  aryl group and a substituted or unsubstituted C 3 -C 14  heteroaryl group; and
 each of R 3  and R 12  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 2 -C 10  alkenyl group, a substituted or unsubstituted C 2 -C 10  alkynyl group and a substituted or unsubstituted C 3 -C 14  heteroaryl group. 
 
     
     
       26. The polymer of  claim 21 , wherein each of R 1  to R 2 , R 4  to R 11 , R 13  and R 14  is a hydrogen atom; and each of R 3  and R 12  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 3 -C 30  heteroaryl group, a group represented by —N(Q 1 (Q 2 ), and a group represented by —Si(Q 3 )(Q 4 )(Q 5 ), wherein each of Q 1  to Q 5  is independently selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, and a substituted or unsubstituted C 3 -C 30  heteroaryl group. 
     
     
       27. The polymer of  claim 21 , wherein each of R 1  to R 14  is a hydrogen atom. 
     
     
       28. The polymer of  claim 21 , wherein the polymer unit is represented by one of Formula 1A below: 
       
         
           
           
               
               
           
         
         wherein each Ar is independently selected from a substituted or unsubstituted pentalenylene group, a substituted or unsubstituted indenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted azulenylene group, a substituted or unsubstituted heptalenylene group, a substituted or unsubstituted indacenylene group, a substituted or unsubstituted acenaphthylene group, a substituted or unsubstituted fluorenylene group, a substituted or unsubstituted phenalenylene group, a substituted or unsubstituted phenanthrenylene group, a substituted or unsubstituted anthracenylene group, a substituted or unsubstituted fluoranthenylene group, a substituted or unsubstituted triphenylenylene group, a substituted or unsubstituted pyrenylenylene group, a substituted or unsubstituted chrysenylene group, a substituted or unsubstituted naphthacenylene group, a substituted or unsubstituted picenylene group, a substituted or unsubstituted perylenylene group, a substituted or unsubstituted pentaphenylene group, a substituted or unsubstituted hexacenylene group, a substituted or unsubstituted pyrrolylene group, a substituted or unsubstituted pyrazolylene group, a substituted or unsubstituted imidazolylene group, a substituted or unsubstituted imidazolinylene group, a substituted or unsubstituted imidazopyridinylene group, a substituted or unsubstituted imidazopyrimidinylene group, a substituted or unsubstituted pyridinylene group, a substituted or unsubstituted pyrazinylene group, a substituted or unsubstituted pyrimidinylene group, a substituted or unsubstituted indolylene group, a substituted or unsubstituted purinylene group, a substituted or unsubstituted quinolinylene group, a substituted or unsubstituted phthalazinylene group, a substituted or unsubstituted indolizinylene group, a substituted or unsubstituted naphthyridinylene group, a substituted or unsubstituted quinazolinylene group, a substituted or unsubstituted cinnolinylene group, a substituted or unsubstituted indazolylene group, a substituted or unsubstituted carbazolylene group, a substituted or unsubstituted phenazinylene group, a substituted or unsubstituted phenanthridinylene group, a substituted or unsubstituted pyranylene group, a substituted or unsubstituted chromenylene group, a substituted or unsubstituted benzofuranylene group, a substituted or unsubstituted benzothiophenylene group, a substituted or unsubstituted isothiazolylene group, a substituted or unsubstituted benzoimidazolylene group, and a substituted or unsubstituted isoxazolylene group; 
         a is 1, 2, or 3; 
         each of R 3  and R 12  is independently selected from a hydrogen atom, a chlorine atom, a bromine atom, an iodine atom, a hydroxyl group, an amino group, a carboxylic acid group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 3 -C 30  heteroaryl group, a group represented by —N(Q 1 )(Q 2 ), and a group represented by —Si(Q 3 )(Q 4 )(Q 5 ), wherein each of Q 1  to Q 5  is independently selected from a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a cyano group, a carboxylic acid group, a substituted or unsubstituted C 1 -C 30  alkyl group, a substituted or unsubstituted C 2 -C 30  alkenyl group, a substituted or unsubstituted C 2 -C 30  alkynyl group, a substituted or unsubstituted C 1 -C 30  alkoxy group, a substituted or unsubstituted C 6 -C 30  aryl group, and a substituted or unsubstituted C 3 -C 30  heteroaryl group. 
       
     
     
       29. The polymer of  claim 28 , wherein, in Formula 1A, —(Ar) a — is represented by one of Formulae 2D to 2K below: 
       
         
           
           
               
               
           
         
         wherein each of Z 1  to Z 4  is independently selected from a hydrogen atom, a C 1 -C 10  alkyl group, and a C 6 -C 14  aryl group; p, q, r and s are each independently an integer ranging from 1 to about 8; * indicates a binding site to N of an adjacent carbazole ring in Formula 1; and *′ indicates a binding site to N of another adjacent carbazole ring in Formula 1. 
       
     
     
       30. The polymer of  claim 28 , wherein, in Formula 1A, each of R 3  and R 12  is independently selected from a hydrogen atom, a chlorine atom, a bromine atom, a hydroxyl group, an amino group, a carboxylic acid group and a C 3 -C 14  heteroaryl group. 
     
     
       31. The polymer of  claim 28 , wherein, in Formula 1A, each of R 3  and R 12  is a hydrogen atom. 
     
     
       32. The polymer of  claim 21 , having a weight average molecular weight ranging from about 2,000 to about 1,000,000. 
     
     
       33. The polymer of  claim 21 , having bipolar characteristics. 
     
     
       34. An organic light-emitting device comprising a substrate; a first electrode; a second electrode; and a first layer disposed between the first electrode and the second electrode, the first layer comprising the polymer of  claim 21 . 
     
     
       35. The organic light emitting device of  claim 34 , wherein the first layer is an emission layer, and further comprises a phosphorescent dopant. 
     
     
       36. The organic light emitting device of  claim 35 , wherein the phosphorescent dopant comprises an organometallic complex including at least one metal selected from iridium (Ir), platinum (Pt), osmium (Os), rhenium (Re), titanium (Ti), zirconium (Zr), hafnium (Hf), and a combination thereof. 
     
     
       37. The organic light emitting device of  claim 35 , wherein the amount of the phosphorescent dopant is in the range of about 1 wt % to about 10 wt %. 
     
     
       38. The organic light emitting device of  claim 34 , further comprising, between the first electrode and the second electrode, at least one layer selected from a hole injection layer, a hole transport layer, an emission layer, a hole blocking layer, an electron transport layer, and an electron injection layer.